Interchangeable duplex roller unit



Nov. 9, 1937.

l... bEPovsEK INTERCHANGEABLE DUPLEX ROLLER UNIT Fileyifbeo. 22, 193e 5 Sheets-Sheet l Invenor Nov. 9, 1937. L. DEPovsEK INTERCHANGEABLE DUPLEX ROLLER UNIT Filed Dec. 22, 193e s sheets-sheet 2 Zaza/7W Horneys Nov. 9, 1937. 1 .v DEPovsEK A 2,098,722

INTERCHANGEABLE DUPLEX ROLLER UNIT Filed Dec. 22, 1936 5 Sheets-Sheet 3 Inventor www@ Wm Attorneys Patented Nov. 9, 1937 UNITED STATES PATENT oF-Fics INTERCHANGEABLE DUPLEX ROLLER UNIT Ludwig Depovsek, Maspeth, N. Y.

Application December 22, 1936, Serial No. 117,201

2. Claims. (Cl. 280--11.28) Y The present invention relates to van ingenious twin roller unit and special adaptation attaching means associated therewith designed to provide a miniature detachable truck usable either in connection with a so-called skate or a sled as the case may be.

Elaborating somewhat on the preceding introductory general'statement, itis to Ybe pointed out that the invention was structurally perfected for 110 use in the construction of a new type roller skate,

the idea being to detach the wheeled units from the skate frame and to apply them to the runners of a sled for use in an amusing and delightful manner. Inasmuch as the novelty is predicated on the specific construction of the roller unit per se, it is obvious that the invention, therefore, comprehends the provision of a support, either a skate frame or sled, and a detachable roller equipped device therefor.

My primary object is to provide an axle and wheel assembly and clamp-equipped means associated therewith susceptible of serving adequately and effectively in either of the aforementioned capacities.

Other more specific structural features and advantages of the invention will become apparent from the following description and drawings.

In the drawings, wherein like numerals are employed to designate like parts throughout the 30 several views:-

Figure 1 is an elevational View of a roller skate equipped with the improved interchangeable detachable duplex roller units or trucks.

Figure 2 is a detail sectional view taken centrally through one of the roller units as applied to the skate in Figure l.

Figure 3 is a sectional View at right angles to Figure 2 showing the construction and method of application to the skate.

Figures 4, 5 and 6 are detail perspective views.

Figure 7 is a side elevational view showing the roller unit applied to a sled.

Figure 8 is a view which may be said to be taken on the plane of the line 8 8 of Figure 7 showing the device applied to the runner of a,

a new skate, and although I have not invented a new roller supported sled, it is necessary that the reader apply the desired generic interpretation to the invention as it is' described. So far as the Vskate I2 is concerned, it comprises overlapping plates I3 and I4 joinedtogether as usual as at I 5. At the front is a so-called toe clamp for the shoe sole indicated at IS and at the back is a foot rest Il' to accommodate a buckle-equipped strap (not shown).

On the assumption then that I feel that I have invented a skate having detachable roller units applicable to a sled of the type seen in Figure 7 it will be noted that the skate is modified to accommodate a pair of rduplicate attaching or hanger xtures of vthe type shown in Figure 6 and unitarily denoted by the numeral I8. Each device comprises a channel-shaped member I9 having upstanding flanges 20 provided with tongues or lugs 2I adapted to be bent through openings in the base portion of the skate for secure anchorage purposes. On the web portion is a T-shaped key 22 corresponding in cross-sectional dimension to the runner I I seen in Figure 7 and designed to accommodate the detachable twin or double roller unit or truck. The latter unit is of composite construction and the parts will be considered indi vidually. A

The aforementioned skate roller unit comprises an axle 23 having appropriate ball-bearing equipped wheels 24 mounted on the opposite ends thereof as in the ordinary skate construction. A substantially U-shaped fixture or receptacle 25 is attached to the axle by way of a knuckle or bearing 26 as seen to advantage in Figure 2. The upstanding ears or ends 2 of this fixture serve to accommodate a cushioning rubber block 28. The block is provided with a bolt reception groove 29 to accommodate the assembling bolt 3D held in place by the cotter key SI. The bolt extends through apertures in the upstanding ears 2l and through slots in overlapping down-turned ears 32 on the cap member 33. This is in effect a capping plate and is provided with longitudinal marginal parallel flanges 34 embracing the adjacent longitudinal edges of the cushioning block 23. Consequently the axle unit comprises a box-likeV enclosure with a bolted on cap 33 and cushioning means to provide the desired resilient properties.

Riveted or otherwise secured to the cap plate 33 is an adapter bracket 35 of the type seen in Figure 4. This includes spaced parallel resilient jaws 36 terminating in V-shaped grips 3T. 'Ihese grips are adapted to engage the longitudinal edge portions of the head part of the T-shaped key 22 seen in Figure 6. The method of engagement is disclosed to advantage in Figure 3 and it will be observed that this is accomplished by use of a clamping bolt 38 of which there may be two or incre. Thus it will be observed from Figure 3 that I have an aXle and supporting rollers therefor, an enclosed cushioning device attached to the axle andv providing a Ymounting for the adapter Xture 35, this being provided with resilient clamping jaws engageable with the hanger device i8 attached to the skate or other support. This same device enables the roller unit to be applied to the sled runners as seen in Figure 7 Consequently, it is of the desired convertible nature. Y Y l As before indicated the claims to be hereinafter asserted are drawn on a roller skate on `the one hand, a sled on the other, the interchangeable device usable in connection with either the roller skate or sled, as well as the roller device'or unit per se. The inventive idea apparently comprehends such an arrangement;

It is thought that the description taken in connection with the drawings will enable a clear understanding of the invention to be had. Therefore, a more lengthy description is thought unnecessary.

While the preferred embodiment of the invention has been shown and described, it is to be understood that minor changes coming Within the field of invention claimed may be resorted to if desired.

ing its ends turned downwardly andoverlapping the ends of the first member, a pin passing through the two sets of `ends and through the groove in the resilient block and an' elongated channel-shaped member having its bight fastened to the top` face of the second member, the flanges of the channel-shaped member being resilient and terminating in outwardly extending V-shapedV gripping parts, and bolts passing through the anges for causing said parts to grip a part of a member to which the attachment is to be connectedl Y 2. In combination with a base part having slots therein, a channel-shaped member having projections at the upper edges of its flanges for fitting in the slots and adapted to be bent over to attach the channel member to the baseY part, a

T-shaped member attached to the under face of the channel member, a wheel carrying body and clamping means connected with the body and engaging the T-shaped member.

LUDWIG DEPOVSEK. 

